Journal of Applied Physics

Effects of probe field intensity in nonlinear optical processes in asymmetric semiconductor quantum dots

Emmanuel Paspalakis, John Boviatsis, Sotirios Baskoutas

Published Oct 17, 2013• 90 citations

Abstract

We study nonlinear optical absorption and nonlinear optical rectification in an asymmetric semiconductor quantum dot structure under a strong probe field excitation. We apply a form of the rotating wave approximation for asymmetric quantum systems, solve the relevant density matrix equations under steady state conditions, and derive the formulae for nonlinear optical absorption and nonlinear optical rectification under the interaction with a strong probe field. The differences between our formulae and those of a previous study are also presented for the case of an electron confined in an asymmetric double quantum dot nanostructure.

DOI: 10.1063/1.4825320

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